67 lines
1.7 KiB
HTML
67 lines
1.7 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<html>
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org">
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<meta http-equiv="Content-Type" content=
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"text/html; charset=utf-8">
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<title>shift</title>
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<LINK rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</HEAD>
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<body bgcolor="#FFFFFF">
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<!-- Java sync-link -->
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<SCRIPT LANGUAGE="Javascript" SRC="../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
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<h2>shift - Shift positional parameters</h2>
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<strong>Synopsis</strong>
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<p><strong>shift</strong> [ <em>n</em> ]</p>
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<p><strong>Description</strong></p>
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<p>You can use <strong>shift</strong> to shift the positional
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parameters to the left by <em>n.</em> Positional parameter 1 is
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assigned the value of positional parameter (1+<em>n</em>),
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positional parameter 2 is assigned the value of positional
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parameter (2+<em>n</em>), and so forth. The special parameter
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<strong>#</strong> is updated with the new number of positional
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parameters.</p>
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<p><strong>Options</strong></p>
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<p>None.</p>
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<p><strong>Operands</strong></p>
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<p>The value of <em>n</em> must be an unsigned integer less than or
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equal to the special parameter <strong>#</strong>. If <em>n</em> is
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not specified, the default value is 1. If <em>n</em> is 0, there
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are no changes to the positional parameters.</p>
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<p><strong>Exit Status</strong></p>
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<ul>
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<li>0 when successful.</li>
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<li>>0 when <em>n</em> is invalid.</li>
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</ul>
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<p><strong>Related information</strong></p>
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<ul>
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<li><a href="set.htm">set - Set or unset options and positional
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parameters</a></li>
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</ul>
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<strong>Examples</strong>
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<ol>
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<li>Shift the positional parameters by two: <strong>shift</strong>
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2</li>
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</ol>
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</body>
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</html>
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